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c8i-flex.4xlarge by Amazon Web Services

c8i-flex.4xlarge is a Compute optimized [Intel processors] Gen8 4xlarge server offered by Amazon Web Services with 16 vCPUs, 32 GiB of memory and 0 GB of storage. The pricing starts at 0.1098 USD per hour.
16 vCPU
32 GiB Memory
Spare SCore
17288
(All-cores)
2123
(Single-core)

Specifications

Server Metadata

Vendor ID
aws
Name
c8i-flex.4xlarge
Description
Compute optimized [Intel processors] Gen8 4xlarge
Family
c8i-flex
Hw Virt
Status
active
Observed At
2026-07-30T14:54:09.585495

Availability

REGION / IDSPOTONDEMAND
(MY) / ap-southeast-5
0.2411 USD/h 0.698 USD/h
Mumbai (IN) / ap-south-1
0.2036 USD/h 0.7122 USD/h
Hyderabad (IN) / ap-south-2
0.199633 USD/h 0.7122 USD/h
Ohio (US) / us-east-2
0.249033 USD/h 0.7122 USD/h
Northern Virgina (US) / us-east-1
0.31246 USD/h 0.7122 USD/h
Oregon (US) / us-west-2
0.287775 USD/h 0.7122 USD/h
Aragón (ES) / eu-south-2
0.1769 USD/h 0.7641 USD/h
Dublin (IE) / eu-west-1
0.4113 USD/h 0.7642 USD/h
Quebec (CA) / ca-central-1
0.242033 USD/h 0.7792 USD/h
Seoul (KR) / ap-northeast-2
0.2303 USD/h 0.8044 USD/h
Frankfurt (DE) / eu-central-1
0.342767 USD/h 0.8127 USD/h
Singapore (SG) / ap-southeast-1
0.318467 USD/h 0.8212 USD/h
Paris (FR) / eu-west-3
0.286767 USD/h 0.8462 USD/h
London (GB) / eu-west-2
0.318467 USD/h 0.8462 USD/h
California (US) / us-west-1
0.2961 USD/h 0.8882 USD/h
Tokyo (JP) / ap-northeast-1
0.311767 USD/h 0.8966 USD/h
Sydney (AU) / ap-southeast-2
0.351533 USD/h 0.9301 USD/h
Cape Town (ZA) / af-south-1
0.1809 USD/h 0.9552 USD/h
(NZ) / ap-southeast-6
0.281133 USD/h 0.9766 USD/h
Sao Paulo (BR) / sa-east-1
0.115767 USD/h 1.0977 USD/h

Processor

vCPUs
16
Hypervisor
nitro
CPU Allocation
Dedicated
CPU Cores
8
CPU Speed
3.9 GHz
CPU Architecture
x86_64
CPU Manufacturer
Intel
CPU Family
Xeon
CPU Model
6975P-C
CPU L1D Cache
48 KiB
CPU L1D Cache Total
384 KiB
CPU L1I Cache
64 KiB
CPU L1I Cache Total
512 KiB
CPU L2 Cache
2 MiB
CPU L2 Cache Total
16 MiB
CPU L3 Cache
480 MiB
CPU L3 Cache Total
480 MiB
CPU Flags
fpu, vme, de, pse, tsc, msr, pae, mce, cx8, apic, sep, mtrr, pge, mca, cmov, pat, pse36, clflush, mmx, fxsr, sse, sse2, ss, ht, syscall, nx, pdpe1gb, rdtscp, lm, constant_tsc, rep_good, nopl, xtopology, nonstop_tsc, cpuid, tsc_known_freq, pni, pclmulqdq, ssse3, fma, cx16, pdcm, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, tsc_deadline_timer, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, abm, 3dnowprefetch, cpuid_fault, ssbd, ibrs, ibpb, stibp, ibrs_enhanced, fsgsbase, tsc_adjust, bmi1, avx2, smep, bmi2, erms, invpcid, avx512f, avx512dq, rdseed, adx, smap, avx512ifma, clflushopt, clwb, avx512cd, sha_ni, avx512bw, avx512vl, xsaveopt, xsavec, xgetbv1, xsaves, avx_vnni, avx512_bf16, wbnoinvd, ida, arat, avx512vbmi, umip, pku, ospke, waitpkg, avx512_vbmi2, gfni, vaes, vpclmulqdq, avx512_vnni, avx512_bitalg, tme, avx512_vpopcntdq, rdpid, bus_lock_detect, cldemote, movdiri, movdir64b, md_clear, serialize, amx_bf16, avx512_fp16, amx_tile, amx_int8, flush_l1d, arch_capabilities
Ecpus
8.1
Scalability
101.25

System Resources and Accelerators

MEMORY
Memory Amount
32 GiB
Memory Amount Actual
32 GiB
Memory Generation
DDR5
Memory Speed
7200 Mhz
GPU
GPU Count
0
GPU Memory Min
0 MiB
GPU Memory Total
0 MiB
GPUs
    STORAGE
    Storage Size
    0 GB
    Storages
      NETWORK
      Network Speed Baseline
      3.75 Gbps
      Network Speed Max
      15 Gbps
      Network Storage Speed Baseline
      2.5 Gbps
      Network Storage Speed Max
      10 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      Server Description

      A compute-optimized x86_64 instance featuring high-speed DDR5 memory and strong single-threaded performance for text processing and compilation workloads.

      Compute OptimizedGeneral Purpose

      The Amazon Web Services c8i-flex.4xlarge is a compute-optimized instance featuring an Intel Xeon 6975P-C x86_64 processor with 16 vCPUs, 8 physical cores, and a 3.9 GHz clock speed. It is configured with 32.0 GB of DDR5 memory running at 7 GHz, providing 2.0 GB of RAM per core, and operates on the Nitro hypervisor with a 4 Gbps baseline network bandwidth. The instance does not include local storage or GPUs. Benchmarks show strong single-core capabilities, with top 25% performance in single-threaded gzip compression and Geekbench single-core tests, alongside top-tier text processing and small-model LLM text generation. Lacking local storage, it relies on network-attached storage. This instance is well-suited for compute-intensive workloads such as software compilation, text processing, and lightweight machine learning inference.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      1.63Score
      Precomputed compound score for Cache Intensive workloads. A weighted average (geometric mean) of benchmark scores compared to their medians: score = ∏ (x_i / m_i)^(w_i / Σw). The score of 1.0 represents a synthetic baseline server with the median performance of each component benchmark; 0.5 means roughly half the performance; and 2.0 means twice the performance of that reference profile. Component weights: 50% Redis RPS (pipeline=1, SET), 20% Redis RPS (pipeline=16, SET), 10% PassMark Memory Mark (composite), 10% Memory bandwidth (read, 16 MB ~ L3), 10% PassMark single-thread CPU. Rationale for component selection: In-memory key-value store workload, mixing direct Redis performance metrics with memory speed and latency benchmarks, and single-core CPU performance profiles.
      Component Score Weight Impact
      Raw Reference Normalized Target Actual
      Redis RPS (pipeline=1, SET) 3,502,054 ops/sec 1,896,415 ops/sec 1.85 50.00% 50.00% +36.00%
      Redis RPS (pipeline=16, SET) 19,546,208 ops/sec 11,539,523 ops/sec 1.69 20.00% 20.00% +11.10%
      PassMark Memory Mark (composite) 2,357 2,411 0.978 10.00% 10.00% -0.22%
      Memory bandwidth (read, 16 MB ~ L3) 168,190 MB/sec 107,368 MB/sec 1.57 10.00% 10.00% +4.61%
      PassMark single-thread CPU 3,272 Mops/s 2,363 Mops/s 1.38 10.00% 10.00% +3.27%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 2,160

      Geekbench Multi-Core

      Score: 13,138

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 29119
      Compression
      		 319886
      Encryption
      		 18133
      Extended Instructions
      		 22620
      Floating Point Maths
      		 59727
      Integer Maths
      		 82445
      Physics
      		 3867
      Prime Numbers
      		 177
      Single Threaded
      		 3272
      String Sorting
      		 42161

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2357
      Database Operations
      		 8867
      Memory Latency
      		 74
      Memory Read Cached
      		 28853
      Memory Read Uncached
      		 12182
      Memory Write
      		 11254

      Stress-ng Raw Scores

      Stress-ng Relative Multicore Performance

      LLM Inference Speed for Prompt Processing

      LLM Inference Speed for Text Generation

      Static Web Server

      Redis

      Alternatives

      Servers of the Same Family

      INSTANCEvCPUsMEMORYGPUs
      c8i-flex.large 24 GiB0
      c8i-flex.xlarge 48 GiB0
      c8i-flex.2xlarge 816 GiB0
      c8i-flex.8xlarge 3264 GiB0
      c8i-flex.12xlarge 4896 GiB0
      c8i-flex.16xlarge 64128 GiB0

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      c8i-flex.4xlarge FAQs